Home / 78,576.36-108,432.06-42,766.44

Finding the Fourth Proportional to 78,576.36, 108,432.06 and 42,766.44

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Solution

The fourth proportional to 78,576.36, 108,432.06 and 42,766.44 is: 59,015.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576.36 : 108,432.06 = 42,766.44 : x
  2. Step 2: Convert to fraction form
    78,576.36/108,432.06 = 42,766.44/x
  3. Step 3: Cross multiply
    78,576.36x = 108,432.06 × 42,766.44
  4. Step 4: Simplify right side
    78,576.36x = 4,637,253,188.07
  5. Step 5: Solve for x
    x = 4,637,253,188.07/78,576.36
  6. Step 6: Final answer
    x = 59,015.88

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.